Stacking mechanism



T. LUNG.

STACKWG MECHANISM.

- APPLICATZON HLED JAN. 15, 9X1.

1,381,318. Emma 3mm 14, 1921.

LSHEETS-SHEET 1.

T. LUNG. STACKING MECHAMSM.

APPLICATION HLED 2AN.15- I917.-

1.,381,31 8. Emma Jane 14, 1921.

2 SHEETS-SPEET 2.

UNITED THOMAS LUND, OF 3.

TO "UNITED SIIO-Tll I PORATION OF W nted June i l, 15321. 131?. Serial ITO. 142,4?4.

To aZZ 20110712 it may cones: Be it. lrnewn tlrt T citizen of the Un u Beverly, in the county of liiassachusetts hav prerements in which the folio tion with the a specification, the (lrau One feature of present lHYOl'lilOIl coniprises a machine of the class described havlng in combination means i'or opei ting successively upon cries of blanks, a chute, means for delivering th blanks one by one into the chute, and means engagingthe etlges of the blanks to stack them, in the illustrative machine the edges of the blanks are engaged on opposite sides of the blanks by feed wheels which project through the walls of the chute and act to push each new blank against the preceding one.

In order to avoid possible injury to the utes to machines for ies bi. s l fern1- a illusedges of the blanks, another feature of the U11 s}; a, 5 2 invention comprises the pro: 'sion of springs v J: roperating heel lifts. LOI' rorcing the ieeal members against the In the manufacture be edges of the blanks whereby said members i Cusim w may yield in case a blank is too wide to Si pass easily betwe n tl-e These and other feat il'z'eil tlOli,

including *er t construction and conibin of ::(l

a in connection h ine Cl? 1 I t; -ough the g was (iGSliQfl place zine pr or to feedingsing machine, it was n by and, VJhen a the lifts automatic iy as I Referring now the $2 higure l 1S a side View art and partly in elevation, which the 5) ent invention is y in section machine In embodied Lil-3 to st eh the sliiving machine by permittin Fig. 2 crizcntal sec-tie on the line fall into a chute or magazine l 3.. 2-2 o'" ing them clown by means i piur- Mien uita "is he. he's in the frame ger, a difficulty arises. The Hanks differ re tn s its on which are in length while the (listen e from '3 l "o 3 and the lower of the shit" chute is fixes anc cons while the usual plun stack blanks of a given 3 cliiiicult to provide adequate changing the timing ts p wide of different lengths, in other interval between the Ciro pingsv t into the chute varies with blenns lerent lengths a1 (l thus press tion to the use of the usual 1" plunger which engages the one by one anal pushes sal into a stack, since if blanl: overhung the mouth of the to have its overhanging portion en by the plunger, such a blank would be liable to be tipped so that the forward encl insteacl of the under face would contact with the upper face of the previous blank.

t upper shaft is fast a to the lower shaft large neshing with a small gear 0 drive shaft 13. A siewn) "1" to the a hes with a su -all i-clle gear 1 which in turn meshes \Vlllll the large gear 7. When, therefore, the drive shaft is retated by means of a belt applied to the lar g'e ulley 17 which is fast to the drive shaft the feed rolls 3 5 are rotated in directions to cause a heel lift blank to be feel to the knif 19.

'- wall saitl having racks termed on b ch m sh with p s j c i upright shaft Thus -V 21 (if the magazine may be ad justed toward and from the rear wall 23 to provide for lifts of different lengths by rctoting the small shaft 29. The lifts are fed one by one from the bottom of the stuck by a feed slide 31 which is operated from a cam 33 fast to the gear 9 through suitable connections, those shown being substantially identical with the corresponding )arts shown in the United States Patent to Pope No. 1,123,369, dated January 5, 1915. The bottom lift oif the stack is engaged at the sides by two guide members 35 which are adjustable toward and from each other by a right and left screw the ends of which are held in yokes 3S horizontally slidable on fixed rods 40. ll knurled head furnishes means for turning the screw to Vary the distance between the guides 35 so to accommodate lifts of oifl erent widths. In order to insure that the lifts-shall be delivered one by one, the opening at the lower end of the front wall 23 is closed by a foot 3'? which isyertically slidable in a block 39 and is held down by a spring 4L1. After the lifts pass the knife 19 they are held flat by means of a presser l3 so as to prev nt their curling, said presser being carried by the bearings of the upper roll. This presser mechanism forms the subject-matter of my United States Patent No. 1,209,737, dated December 16, 1916, and will not be further oescribed.

From this pressing or flattening mechanism the lifts )ass upwardly across an inclined table &4: and drop into the upwardly curved mouth of a chute or holder the base 46 of which is stationarr while tl e sides ll are adjustable toward and from each other on the base to provide for lifts of different widths. To permit this adjustment the side walls are carried by front brackets 49 and rear brackets 51. A right and left screw 53 is threaded into the front brackets 49 and second right and left screw 55 is threaded into the rear brackets. The stems of these screws have fast to or out upon their n'iiddle portions spiral gears which mesh with spiral gears 5'7, 59 cut upon the ends of a horizontal shaft 61 which may be readily turned by grasping: a thumb hold A receptacle 65 is detachably hooked on pins 67 carried by the chute walls 47 so that, when filled, this r eptacle may be used to carry a s ck of 'i os to a heel compressor or other machine in which they are to undergo a. further operation.

As the lifts fall into the open mouth of the chute it is necessary to push them down in order to stack them and to move the stack along so that the receptacle may be filled. To this end feed wheels 69 having 'corrunations or dull teeth thereon project through the walls 1-? of the chute intoi positions to engage the edges of the lifts. These feed wheels are mounted on the rear ends of short position after shafts to the front ends of which are fastened worm wheels 71 which engage aright and left worm 73 formed on the shaft 13. The short shafts are rotatably mounted in heari gs '75 having square stems T7 whlch are received in sockets in brackets "(9 has ten-ed the front brackets l9 of the side walls 421' by screws Fiprings 83 force the bearings Y5, and with them the feed wheels 69., toward the walls of the chute, the extent of such movement being controlled by nuts threaded on the ends of the Steins 7?. Thus the feed wheels have yielding engagement with the edges of the lifts to provide for any slight variations which may occur in their width and to prevent an unusually wide lift from becoming jammed or injured. It will be noted that with the construction described above, when the thumb hold 63 is manipulated to move the side walls l? of bile chute toward or fronreach other, the feed wheels (59 more with said walls, the wheels '71 at such times rolling on the worm 7 in order to prevent the slriyed lifts from being pushed too for over the mouth of the chute, a bar 8'2', which is loosely pivoted to the frame at 89 and normally rests in the position shown, is provided with a slot in whic a stop 91 is adjustably fastened by a wing nut 93.

ln the operation of the machine the lifts are fed rapidly one by one to the knife and pushed ahead by the preceding lifts until one by one they drop into the mouth of the chute. The first few lifts do not stand up on edge but merely overlap one another on the bottom of the chute and are moved along in that position. However, as the lifts accumulate and offer more and more resistance to the action of feed wheels 69 a lift is presently forced into an approximately upright which the stacking; of the lifts proceeds until finally the lifts occupy the positions shown in 1. Then the recepitacle has been filled, it is removed and an empty one substituted for it.

It in some cases desirable to confine the stacked lifts a little more closely than they are confined by the walls l? so as to cause the stack to offer a little more resistance to being moved along. In such case there may be provided two thin sheet metal spring members 95 (see Fig. 2) which are substantially of the same height as the walls 17. The spring members are detachably attached to the walls 4:7 by means of pins 97 which are fast to said springs and enter holes in said walls; and preferably these members are inclined to the plane of the base 45, the1r upper edges being indicated at 195 and their lower edges at 295. The

purpose of these members, as been stated, is to offer resistance to the movements of the lifts and thereby to facilitate the staekingoperatiomshould be understood not l1m1ted in the scope of It should be particularly noted that the feed wheels engage the edges of the lifts, and that the word dge as used in the claims refers to the surface which is at right angles to the upper and lower sides of the lifts.

Although the invention has been set forth in connection with a particular machine, it that the invention is its application to the particular machine which has been and described.

aving thus cescribed my invention, what I claim as new and desire to secure by ,Letters Patent is:

l. A machine of the class described, having in combination, means for operating successively upon a series oi blanks, a chute, means for delivering the blanks one by one into said chute, a wheel for engaging the edge of each blank, and means for rotating the wheel about an axis which extends in the general direction of tile depth dimension of the chute and at an angle to the direction in which the blank is moved by the wheel.

2. A machine of the class described, having, in combination, means for operating successively upon a series of blanks, a chute, for delivering the blanks one by one into said chute, and feed members engagmg the edges of the blanks after they have entered the chute to push them along and thereby stack them, said members being bodily movable toward and from salt edges.

8. A machine of the class described, having, in combination, means for operating successively upon a series of blanks, a chute, means for delivering the blanks one by one into said chute, and means extending through the walls or" the chute into engagement with the edges of said blanks for forcing them along in said chute.

4. A machine of the class described, having, in combination, means for operating successively upon a series of blanks, a chute, means for delivering the blanks one by one into said chute, and yielding means extending through the walls of the chute into engagement with the edges of said blanks for forcing them along in said chute.

5. A machine of the class described, having, in combination, means for operating successively upon a series of blanku a chute into which the blanks are delivered one b one, feed wheels extending through the walls of the chute into engagement with the edges of the blanks, and means for rotating said wheels to force the blanks along in the chute- 6. A machine of the class described, having, in combination, means for operating successively upon a series of blanks, a chute into which the blanks are delivered one by one, feed Wheels extending through the Walls of the chute into engagement with the edges of the bl nks, means for rotating said wheels toforce the blanks along in the chute, and springs acting to permit said wheels to yield.

7. A machine of the class described, havin in combination, means for operating (a, successively upon a series of blanks, a chute into which the blanks are delivered, said chute comprising a stationary wall and two movable walls, adjustable toward and from each other, feed wheels extending through said movable walls and adjustable therewith, and means for rotating said wheels.

8. machine of the class described, hwing, in combination, means for opera! lg successively upon a series of blanks, a chute into which the blanks are delivered, said chute comprising a stationary wall and two movable walls, adjustable toward and from each other, feed wheels extending through said movable walls and adjustable th with, springs for urging said wheels tow the walls of said chute, and means for tating said wheels.

9. A stacking device for series of blanks, having, in combination, a chute having an upwardly directed mouth to recs a series of blanks, and means extending t .igh the walls of the chute into engagement with the edges of said blanks for forcing them along said chute. 4

10.A stacking device for a series of blanks, having, in combination. a chute 1 n upwardly directed mouth to receive a ser. of blanks, and yielding means extending through the walls of the chute into engagement with the edges of said blanks for for ing them along in said chute.

11. A stacking device for a series of blanks, having, in combination, a chute having a substantially horizontal body and an upwardly directed mouth, and means extending through the walls 01 the chute near said mouth into engagement with he edges of said blanks tor forcing them down into the body of said chute.

12. A stacking device for a series of blanks, having, in combination, a chute comprising stationary bottom and adjustable side walls, and means extending through said side walls into engagement with the edges of the blanks to stack them and to move the stack along in the chute.

13. A stacking device for a series of blanks, having, in combination, a chute comprising a stationary bottom and adjustable side walls, and means adjustable with said side walls and extending through said side walls into engagement with the edges of the blanks to stack them and to move the stack along in the chute'.

14: A stacking device for a series of blanks, having, in combination, a chute into the mouth of which blanks may be delivered,

' engage opposed points on the and continuously actuated. stacking means extending through the walls of the chute in position at all timesto engage the edges of a blank as it passes between said stacking means.

15. Stacking mechanism comprising a chute including adjustable side walls, feed wheels extending through said walls at opposite openings therein, said wheels being adjustc ble with said walls, and means forrotating said wheels constructed and arranged to remain operative when the walls and wheels are adjusted.

16. A machine of the class described, having, in combination, means for operating successively upon a series of blanks, a holder, means for delivering the blanks one by one into the holder, feed members arranged to edge of each blank, and means for operating the feed members to force the blanks along between the points on the feed members which are nearest each other.

17. A machine of the class described, hav ing, in combination, means for operating successively upon a series of blanks, a holder,

means for delivering the blanks one by one into the holder, feed wheels arranged to engage with their peripheries substantially op.- posed points on the edge of each blank, and means for rotating said wheels in opposite directions to force the blanks along in the holder.

18. A machine of the class described, having, in combination, means for operating a series of blanks, a chute over the mouth of which the blanks are said mouth, and means whereby the stop may be adjusted to provide for blanks of different dimensions.

19. 1; machine of the class described, having, in combination, means for operating successively upon a series of blanks, a holder into which the blanks are delivered, said holder comprising walls adjustable toward and from each other, feed members for advancing the blanks in the holder extending through said walls into engagement with the edges of the blanks and adjustable with the adjustable walls, and means for operating said feed members.

20. Stacking mechanism for blanks comprising a blank-receiving chute having bottom and side walls, so shaped as to present an upwardly extending mouth and provided with slots, a blank feeding device located outside said mouth but adapted to enter said slots and thereby engage the blanks entering the chute to feed them forward, and means for actuating said device in a manner to ad Vance the blanks.

21. A stacking device for blanks comprising a'chute having an upturned mouth into which blanks may be delivered, and stacking means operating through the upturned wall of the chute to engage the blanks as they enter the chute and feed them forward.

In testimony whereof I have signed my name to this specification.

THOMAS LUND. 

